Climbo

Your little creature can walk up walls and make the whole universe rotate around him.
Use arrow keys to meander about, jumping over spikes and pits, collecting little light
balls to boost your score. The game adds boxes that slide hither and thither as the
course rotates around them so you'll have to be mindful of getting crushed.
The courses become trickier but the solutions are usually straightforward and won't
require more than a few tries.